"Enjoy the ultimate home theater experience with be Free Sounds 2.1 channel surround sound Bluetooth speaker system. This speaker system is designed with sophistication in mind, featuring a sleek look and smooth sound. With Bluetooth, usb, SD and FM radio capability, the system offers the best possible listening options for your enjoyment. * 5.25" amplifier x 1 + 3" speakers x 2 * output power: 40w+10w*2 * frequency response: 40hz-20khz, * separation: ?50db, * s/n ration: ?75db * features: Usb/SD/FM/Bluetooth * includes remote control.